The Seletek controller with WIFI and USB connection.

The Seletek controller with WIFI and USB connection.



Connect via Wifi, using Limpet’s internal access point or your observatory’s, or with an USB cable.



Control the focuser from any astronomy program (ASCOM and INDILib drivers available) or just from your smartphone. Or your computer’s web browser.


Focuser and more

Can alternatively control a camera rotator (with our Windows software).


  • Focuser controller
  • … from your astronomy program, your smartphone or your web browser
  • Very small enclosure (70x70x26mm)
  • Central hole to easily attach the limpet to the telescope using a single screw
  • Wifi and USB connection
  • Very low power requirements (30mA idle connected to wifi, 530mA focusing with our standard motor)
  • Optional external temperature sensor
  • Including a screw locking 2.1x 5.5mm jack for safe attachment of power cable
  • 5.5 / 2.1mm standard jack, centre positive, 12V dc (13.8V as supplied by some batteries is valid)
  • ASCOM and INDILib enabled
  • focus from you smartphone via web interface (NEW!)
Limpet Lunatico focuser with WIFI and USB connection.
Seletek Limpet focuser kit

Seletek Limpet samples screens

Limpet Technical specifications

•     Focuser controller
•     Outputs: 4 power digital outputs (up to 1.5A) – thermal autoshutdown of the drivers in case of overheating.
•      Inputs: 3 analogical-digital inputs (1 for the temperature external sensor, 2 protected with resettable fuses)
•      PC connection via USB and Wifi
•      Size: 70 * 70 * 26 mm
•      Weight: <85 gr.
•      External power supply 12V dc (13.8V as supplied by some batteries is valid)
•      The Windows software supports any current version (XP, Vista, 7, 10, 32bit, 64bit)
•      ASCOM compliant software (focuser & rotator)
•      INDIlib focuser driver
•      Will work with FocusMax, MaximDL, CCDCommander, ACP, CCD AutoPilot, SGPro, Voyager, APT… and any ASCOM aware astronomy software